An easy slow one with several common words and useful word grouping. This is great for beginners but also a good break if you've been struggling with 100wpm dictations. Concentrate on getting those outlines nice and smooth and neat.
This early classic from Radiohead goes at a gentle pace but is packed with essential vocab and theory. There's the 'A' indicator for 'ang' in angel, the 'cn' blend for skin and perfect abbreviated to perf. 'Creep' could be written with the 'P' intersecting the 'C' but I prefer to write it in one stroke. I've transcribed the clean version because you're not going to get the f-word in an NCTJ exam!
Johnny Cash's Nine Inch Nails Cover shouldn't be too painful. It goes at a moderate pace with time to catch up but it took me a couple of attempts to get outlines which were legible. There are a number of common words and word groupings. The 'in the end' word grouping is a crucial time saver.